Spiral ducting collars are circular fittings used to join duct sections, connect accessories and create transitions within commercial ventilation and HVAC systems. This guide explains the differences between male and female collars, where they are used and what to consider when selecting them.
Grilles and diffusers are terminal components fitted at the end of ductwork to supply, return or extract air. While both provide a finished air path between a room and the ventilation system, diffusers are primarily designed to distribute supply air and grilles are commonly used for return, extract or transfer air.
Volume control dampers are adjustable ductwork components used to regulate, balance or isolate airflow within ventilation and HVAC systems. This guide explains how they work, where they are fitted, common types and key selection considerations.
Ductwork access doors provide a controlled opening into a ventilation or HVAC duct system. They enable inspection, cleaning, testing, adjustment and maintenance without dismantling duct sections. This guide explains the main types, applications and selection considerations for commercial ductwork.
Spiral ducting is usually joined using slip-fit connections, collars or flanged connections, then sealed and mechanically secured where required. The right method depends on duct diameter, pressure, leakage expectations, access and the fitting being connected.
